Teeeitoey



(No Model.)

L. S. OSGOOD. ORB CONGENTRATING TABLE.

No. 324,783. Patented Aug. 18, 1885.

. UIN

INVE NTI-ORI WITNESSES:

By his H0/ways,

N. PETERS. Pmwumngnphr, washing, D. c.

iran Y STATES ParnivA ORB-CONCENTRATING TABLE.

SPECIFICATION forming part of Letters'Patent No. 324,783, dated August18, 1885.

Application led June 12, 1885. (No model.)

To all whom it may concern:

Beit known that I, LEONARD S. OsGooD, a citizen of the United States,and a resident of Stockton, Tooele county, Utah Territory, have inventedcertain Improvements in Ore-Concentrating Tables, of which the followingis a specication.

My invention relates to that class of con. centrating-tables used forsaving gold, silver, lead, and othernietals and minerals; and the objectis to provide a concentrator that will save the very iine flour gold,silver, lead, or other mineral that is usually lost by the ordinarymachines and methods employed and in common use at this time.

In the drawings which serve to illustrate my invention, Figure l is aside elevation of my improved concentrating-table. Fig. 2 is a plan ofthe same, the central portion being broken away. Fig. 3 is a transversesection taken on line 3 3 in Fig. l.

A is a suitable stout frame, in which is hinged at a a stout frame, B,which has a vertical swinging movement on its hinges at a. The freeswinging end of frame B is supported on a screw, C, which is coupled tothe frame B by a hingebolt, b, and fits `at its lower end in a socket ina plate, c, on the main frame. On the screw C is a wheel-nut, D, wherebythe l'free end of the frame B may be raised and lowered and adjustedwith the greatest nicety. On the frame B are mounted rollers d d, theaxes of which rest in open bearings in pillowblocks e e on frame B.These rollers have circumferential grooves in theirperipheries in themanner of sheaves.

E is the concentrating-table proper, which is mounted on the rollers d,and is made capa# ble of receiving an endwise reciprocating movement. Onthe bottom of this table are Vshaped tracks gg, the edges of whichengage the grooves in the rollers d. This ilange construction isdesigned to prevent any lateral movement of the table on the rollers.The table E has its upper surface covered with a metal plate, x, thekind of metal being that best suited to the ore treated. At the sides ofthe table are raised rails or anges ML, and there is also a raised railor flange, h', at the receiving end.

The mechanism for imparting a reciprocat ing movement to the tablecomprises a rotatively-mounted shaft, F, and its pulley G, an eccentric,t', on this shaft, and an eccentric-rod, j, leading from the eccentricstrap t" to the end of the bed and connected thereto withahingecoupling. Rotation of shaft F will produce reciprocation of thebed, and the extent of this reciprocatory movement may be varied bymaking the throw of the eccentric adj ust able in any of the well-knownways.

The ore,in pulpy orliquid form,is fed onto the table at the end oppositeto the hinge a through a cross-pipe, 7a, provided with perforations orshort jet-pipesZZ. Any other equivalent means may be employed fordelivering the ore on the table. I-I is an apron secured at its upperend to that end of the table opposite the feed. The refuse ilows downthis apron.

In using my machine the table is given the proper vertical adjustment.The [ine ore, sand, or slums77 is fed onto the table, as described, andthe table reciprocated, in order to cause all the iine particles tosettle to the bottom. The refuse is caused to ow off at the apron H, andthe valuable product left adhering to the surface is shoveled off intoany suitable receptacle for future reduction. Another charge of slums,&c., may then be run onto the table and the process repeated.

The motion of the table is suoli that the refuse matter is carried offby the water and the heavier valuable product retained on the table. Intreating gold-bearing material the plate .fr on the table should be ofcopper,which would permit of its being amalgamated, whereby it wouldcatch all the gold, silver, or amalgam, (as in the case of slums.) Whena sufficient amount had been collected, the plate would have to becleaned off and the process repeated.

Having thus described my invention, I claim* A l. The combination, withthe concentratingtable and the means, substantially as described, ofimparting to it a reciprocating motion, of the hinged supporting-frameI3, provided with a nut and screw for adjusting vertically its free end,the grooved bearingrollers d, and the tracks g, substantially as setforth.

2. The combination, with the concentratingtable, the mechanism forreciprocatingit, the B, hinged to the main frame at the end Where tracksg, the rollers d, mounted on the frame B, the reciprocating mechanism ofthe bed is the said frame B hinged at one end, as shown, mounted, andthe nut and screw for regulating 15 the screw G, hinged at Z) under thefree end the height of the free end of frame B, all sub- 5 of frame B,with its end engaging a socket, c, -stantially as herein set forth.

and the nut D, all arranged to operate sulo- In witness whereof I havehereunto signed stautially as set forth. my name in the presence of twosubscribing 3. The combination of the table E, provided Witnesses. withtracks g on its under side, the shaft F, LEONARD S. OSGOOD. ro eccentrici, eccentric-rod j, coupled to table Witnesses:

E, the grooved rollers d, mounted on the frame CLARK H. PARSONS,

B, the tracks g, resting on said rollers, the frame THEoDoRE A. BAILEY.

